169 patents
Page 8 of 9
Utility
Crane
9 Nov 20
A crane 1, the hook (main hook 24) of which is stored on the lower end of a boom 7, and the winch (main winch 9) of which can be moved by a hydraulic motor 37, said crane being provided with a pressure sensor 55 capable of detecting the pressure of hydraulic fluid being delivered to the hydraulic motor 37, and a controller 61 capable of recognizing changes in the pressure of the hydraulic fluid on the basis of a signal from the pressure sensor 55, and also being provided with an anomaly warning means Mi capable of providing warning of anomalies pertaining to the storage of at least the hook (24), the controller 61 activating the anomaly warning means Mi when it is determined that the pressure of the hydraulic fluid when the hook has been stored is below a minimum value.
Yasuhiro Fukumori, Naoto Kawabuchi, Naofumi Yoshida
Filed: 6 Apr 17
Utility
Working machine and operation system for working machine
9 Nov 20
There is provided a working machine that includes an operated function unit, an in-vehicle network to be connected to an operation terminal via an external network, an operation unit that transmits an intrinsic operation signal related to operation of the operated function unit to the in-vehicle network, and a control unit that is connected to the operation unit via the in-vehicle network and controls the operated function unit on the basis of either a false operation signal generated by the operation terminal or the intrinsic operation signal.
Kazuhisa Onishi, Takero Ikiyama
Filed: 26 Feb 17
Utility
Apparatus for preventing remote operation terminal from being mislaid, remote operation terminal, and system for preventing remote operation terminal from being mislaid
19 Oct 20
An apparatus for preventing a remote operation terminal from being mislaid, the remote operation terminal remotely operating a work machine driven via a PTO device in a vehicle, the apparatus being configured so as to have: a reception device for receiving a wireless signal transmitted by a transmission device provided to the remote operation terminal, the reception device being provided to the vehicle; a determination section that, when the PTO device is in an OFF state, determines whether or not the reception strength of the wireless signal received from the transmission device by the reception device is equal to or less than a prescribed threshold value; and a notification section for issuing a notification when the reception strength is equal to or less than the prescribed threshold value.
Yuji Araki
Filed: 25 Apr 18
Utility
Unload circuit
12 Oct 20
The unload circuit includes a pump oil passage that connects between a hydraulic pump and a direction control valve, a tank oil passage that connects between the direction control valve and a hydraulic tank, a pressure compensating flow control valve interposed between the pump oil passage and the tank oil passage, a pilot operated relief valve interposed between the pump oil passage and the tank oil passage, and an unloading solenoid valve interposed in a vent oil passage of the pilot operated relief valve.
Naoto Kawabuchi, Naofumi Yoshida, Yasuhiro Fukumori
Filed: 23 Mar 17
Utility
Crane
30 Sep 20
A crane creates a 3D map on the basis of three-dimensional information acquired by a three-dimensional information obtaining section that is provided on a boom.
Iwao ISHIKAWA, Keisuke TAMAKI
Filed: 7 Dec 17
Utility
Hydraulic System and Emergency Operation Method
30 Sep 20
This hydraulic system is provided with: a hydraulic pump; a pilot-type control valve; an electromagnetic proportional valve; a controller; and a pilot pressure switching unit which is capable of switching the electromagnetic proportional valve supply pressure to a first pressure during a normal operation, or to a second pressure lower than the first pressure.
Naoto KAWABUCHI, Naofumi YOSHIDA, Naotaka MASUDA, Yasuhiro FUKUMORI
Filed: 30 Mar 17
Utility
Crane
28 Sep 20
A crane is disclosed, the crane includes detachable hydraulic cylinder including a head side oil chamber and a rod side oil chamber both to be connected to a control valve through a joint, in which a head side hydraulic detecting section and a rod side hydraulic detecting section are each provided to the hydraulic cylinder, and a connection state between the hydraulic cylinder and the control valve is determined based on a head side hydraulic pressure and a rod side hydraulic pressure in a period until a predetermined time elapses after supply of electric power to the head side hydraulic detecting section and the rod side hydraulic detecting section is started and an operation tool for hydraulic cylinder switches the control valve to a state of supplying hydraulic fluid to the hydraulic cylinder.
Toshihiko Okamoto, Yasuhiro Maeda, Naoto Kawabuchi
Filed: 6 Apr 17
Utility
Failure Detection Device
16 Sep 20
The failure detection device is a failure detection device of a pilot circuit, the pilot circuit including: a pilot pressure source; a pilot pressure supply unit that supplies pilot pressure to a control valve; a pilot oil path that connects the pilot pressure source and a pilot pressure supply unit; and a pressure control unit that controls a pressure of the pilot oil path, the failure detection device including: a pressure sensor that measures the pressure on a downstream side in a pilot pressure supply direction of the pressure control unit; and a controller that controls the pressure control unit to sequentially switch the pressure of the pilot oil path and performs a failure diagnosis based on a measurement result of the pressure sensor at this time, as an operation lever which receives an operation for operating the actuator returns to a neutral state.
Naoto KAWABUCHI, Naofumi YOSHIDA, Yasuhiro FUKUMORI
Filed: 30 Mar 17
Utility
Crane
19 Aug 20
The resonant frequency ωx(n) of horizontal shaking of a suspended load W suspended from the distal end of a telescopic boom 9 via wire ropes 14⋅16 is calculated on the basis of the suspension length Lm(n)⋅Ls(n) of the wire ropes 14⋅16; the characteristic frequency ωy(n) in the raising and lowering direction of the telescopic boom 9 is calculated; and, in accordance with an operation for raising and lowering the telescopic boom 9, the filtering control signal Cd(n) of an actuator is generated in which a frequency component in a discretionary frequency range is attenuated at a discretionary ratio with reference to the resonant frequency ωx(n) of the suspended load W, and in which a frequency component in a discretionary frequency range is attenuated at a discretionary ratio with reference to the characteristic frequency ωy(n) in the raising and lowering direction of the telescopic boom 9.
Shinsuke KANDA, Kazuma MIZUKI
Filed: 27 Sep 18
Utility
Outrigger Device
5 Aug 20
An outrigger device that is mounted on a vehicle and can switch between a usage state and a storage state includes: a lateral outrigger that extends in a vehicle width direction of the vehicle; a vertical outrigger that is extendable and is rotatably coupled to a leading end portion of the lateral outrigger; a first coupling member that constantly couples a first part of the vertical outrigger to the lateral outrigger and serves as a rotational center of the vertical outrigger; a second coupling member that can switch between a first state where a second part of the vertical outrigger is coupled to the lateral outrigger and a second state where the second part is uncoupled from the lateral outrigger; a conversion mechanism that converts a retraction of the vertical outrigger into an upward rotation of the vertical outrigger; and a safety device that prohibits an operation of the conversion mechanism in the first state and permits the operation of the conversion mechanism in the second state.
Nobuyuki TSUYAMA
Filed: 8 Aug 18
Utility
Human Detection System for Work Vehicle, and Work Vehicle Equipped with Same
5 Aug 20
A human detection system 18 includes: a camera 19 that acquires detection image data Dd of a detection region D, the detection region D being a prescribed region including a portion of a crane 1; a deviation determination unit 21c in which image data of the crane 1 included in the detection image data Dd acquired by the camera 19 in a state of being disposed at a reference position is set as reference image data Sd of the detection region D, and in which the detection image data Dd of the detection region D acquired at an arbitrary time by the camera 19 is compared to the reference image data Sd to determine whether the position of the camera 19 has deviated from the reference position; and a reporting unit 21d that reports that the position of the camera 19 has deviated.
Iwao ISHIKAWA, Tomohiro TOYOSAKI, Masafumi TAKAHASHI
Filed: 8 Mar 18
Utility
Method for Controlling Crane, and Crane
5 Aug 20
There is provided a method for controlling a crane, with which the position of a hook is automatically adjusted before lift-off, where a freely-derricking telescopic boom is provided to a swivel base, a main hook is suspended with a main wire rope from a distal end section of the telescopic boom, and a suspended load is suspended on a main hook with slinging wire ropes, wherein post-slinging lift-off is preceded by a hook position adjustment control involving repeating: a first process where the control device controls so as to reel in the main wire rope to a position where the main wire rope is tensed; and a second process where the control device controls so as to move the distal end section of the telescopic boom in the same direction of a horizontal direction component of the movement of the main hook in the first process.
Shinsuke KANDA, Shoji NISHIMOTO, Kazuma MIZUKI
Filed: 2 Oct 18
Utility
Display apparatus for traveling cranes and synchronizing aparatus for traveling cranes
3 Aug 20
Provided is a display apparatus fir traveling cranes which is capable of displaying information about another traveling crane.
Iwao Ishikawa
Filed: 30 Mar 16
Utility
Overload Preventing Device
22 Jul 20
This overload preventing device is mounted on a mobile work machine, and is provided with: a storage unit which stores lifting performance data in which lifting performance is configured for each operation state, and performance region data in which switching angles are configured that define performance regions, including a front region, a back region, and a side region; and a work machine control unit which controls operation of the mobile work machine on the basis of the actual load and the lifting performance corresponding to the present operation state of the mobile work machine.
Kazuhiro FURUICHI
Filed: 31 Jul 18
Utility
Crane
15 Jul 20
Provided is a crane that is capable of effectively suppressing oscillation related to the pendulum resonance frequency generated in a suspended load on the basis of the suspended length of a wire rope.
Shinsuke KANDA, Kazuma MIZUKI
Filed: 27 Sep 18
Utility
Overload Preventing Device
15 Jul 20
This overload preventing device is mounted on a mobile work machine, and is provided with: a storage unit which stores lifting performance data; and a work machine control unit which controls operation of the mobile work machine on the basis of the actual load and the lifting performance corresponding to the present operation state of the mobile work machine.
Kazuhiro FURUICHI
Filed: 31 Jul 18
Utility
Crane Vehicle
1 Jul 20
A crane vehicle includes: an operation unit; a winch device configured to operate at a speed corresponding to an operation amount of the operation unit; a weight detection unit; a storage unit configured to store a time-weight target characteristic indicating a target in temporal change of a detected value at the weight detection unit for a maximum operation amount input from the operation unit; and a control unit configured to perform feedback control of an operation speed of the winch device such that the detected value follows the time-weight target characteristic in a case where the maximum operation amount is input from the operation unit, the control unit being configured to set the operation speed of the winch device at the speed corresponding to the operation amount of the operation unit, in a case where fluctuation of the detected value has converged in a predetermined range.
Kazuo MITANI
Filed: 17 Jul 18
Utility
Guide Information Display Device and Crane
24 Jun 20
To accurately present guide information which expresses the shape and height of a hoisting load and an object located near the hoisting load.
Takayuki KOSAKA, Iwao ISHIKAWA, Satoshi KUBOTA, Shigenori TANAKA, Kenji NAKAMURA, Yuhei YAMAMOTO, Masaya NAKAHARA
Filed: 18 Jul 18
Utility
Guide Information Display Device, Crane Equipped with Same, and Guide Information Display Method
27 May 20
To accurately present information about the shape and location of a hoisting load and an object located near the hoisting load, regardless of the orientation and operational state of the crane.
Takayuki KOSAKA, Iwao ISHIKAWA, Satoshi KUBOTA, Shigenori TANAKA, Kenji NAKAMURA, Yuhei YAMAMOTO, Masaya NAKAHARA
Filed: 18 Jul 18
Utility
Data Point Group Clustering Method, Guide Information Display Device, and Crane
27 May 20
Provided is a method for clustering the data point groups of one or more measurement targets located in the same region from among the acquired data point groups.
Takayuki KOSAKA, Iwao ISHIKAWA, Satoshi KUBOTA, Shigenori TANAKA, Kenji NAKAMURA, Yuhei YAMAMOTO, Masaya NAKAHARA
Filed: 18 Jul 18